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- // SPDX-License-Identifier: Zlib
- /* dfltcc.c - SystemZ DEFLATE CONVERSION CALL support. */
- #include <linux/export.h>
- #include <linux/module.h>
- #include "dfltcc_util.h"
- #include "dfltcc.h"
- char *oesc_msg(
- char *buf,
- int oesc
- )
- {
- if (oesc == 0x00)
- return NULL; /* Successful completion */
- else {
- #ifdef STATIC
- return NULL; /* Ignore for pre-boot decompressor */
- #else
- sprintf(buf, "Operation-Ending-Supplemental Code is 0x%.2X", oesc);
- return buf;
- #endif
- }
- }
- void dfltcc_reset(
- z_streamp strm,
- uInt size
- )
- {
- struct dfltcc_state *dfltcc_state =
- (struct dfltcc_state *)((char *)strm->state + size);
- struct dfltcc_qaf_param *param =
- (struct dfltcc_qaf_param *)&dfltcc_state->param;
- /* Initialize available functions */
- if (is_dfltcc_enabled()) {
- dfltcc(DFLTCC_QAF, param, NULL, NULL, NULL, NULL, NULL);
- memmove(&dfltcc_state->af, param, sizeof(dfltcc_state->af));
- } else
- memset(&dfltcc_state->af, 0, sizeof(dfltcc_state->af));
- /* Initialize parameter block */
- memset(&dfltcc_state->param, 0, sizeof(dfltcc_state->param));
- dfltcc_state->param.nt = 1;
- /* Initialize tuning parameters */
- if (zlib_dfltcc_support == ZLIB_DFLTCC_FULL_DEBUG)
- dfltcc_state->level_mask = DFLTCC_LEVEL_MASK_DEBUG;
- else
- dfltcc_state->level_mask = DFLTCC_LEVEL_MASK;
- dfltcc_state->block_size = DFLTCC_BLOCK_SIZE;
- dfltcc_state->block_threshold = DFLTCC_FIRST_FHT_BLOCK_SIZE;
- dfltcc_state->dht_threshold = DFLTCC_DHT_MIN_SAMPLE_SIZE;
- dfltcc_state->param.ribm = DFLTCC_RIBM;
- }
- EXPORT_SYMBOL(dfltcc_reset);
- MODULE_LICENSE("GPL");
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